I have a Moki 1.35 in the GP 1/4 scale Giles and it turns an APC 17X8 at 9200 rpm max on 5% nitro fuel. I'm running a 20 oz tank and fuel consumption at FULL throttle is 1.5 oz/min, quite a bit less when you figure only 1/2 throttle is needed for strait and level flight. I, therefore, don't understand the negative comment regarding the Moki's fuel consupmtion.

The Moki takes about an hour to break in, but given its hard crome plated liner, should outlast the OS by quite a margin.

A friend has the same plane w/ an OS 160 which also performs very nicely, both planes will climb out of a hover slowly, for what it's worth. The only real world advantage the OS (w/ the stock muffler) has over the Moki is regarding noise. With the Bisson Pits style muffler, the Moki is noticebly louder than the OS.